Autavia 3646 1st Exec.
Launched in 1962 in conjunction with the 2446, the first 3646 has the two distinctive large sub registers and applied radium lume hour markers made even more special with the applied numerals at 6 and 12. The 37mm diameter case with wide hour, minute or decimal bezel with lume triangle at 12 houses a Valjoux 92 movement signed Ed Heuer. Caseback is signed Ed Heuer.

